Contactless power receiving unit and electronic device employing the same
First Claim
Patent Images
1. A contactless power receiving unit comprising:
- a plurality of power receiving coils arranged to have certain relative angles to one another in a parallel magnetic field generated by a power supply unit;
a rectifier circuit connected to each of the power receiving coils; and
an adder circuit configured to add DC power obtained, through the rectifier circuits, from the plurality of power receiving coils, and to output the resultant DC power of the addition.
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Abstract
Provided is a contactless power receiving unit which has a simple configuration, and which is capable of generating constant induced electromotive force regardless of the orientation of a power receiving coil. Multiple power receiving coils are arranged to form certain relative angles to one another in a parallel magnetic field generated by a power supply unit. A rectifier circuit is connected to each power receiving coil. An adder circuit is configured to add DC power obtained, through the rectifier circuits, from the multiple power receiving coils, and to output resultant DC power of the addition.
25 Citations
17 Claims
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1. A contactless power receiving unit comprising:
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a plurality of power receiving coils arranged to have certain relative angles to one another in a parallel magnetic field generated by a power supply unit; a rectifier circuit connected to each of the power receiving coils; and an adder circuit configured to add DC power obtained, through the rectifier circuits, from the plurality of power receiving coils, and to output the resultant DC power of the addition. - View Dependent Claims (2, 3, 4, 5)
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6. An electronic device employing a contactless power receiving unit comprising:
a power receiving unit comprising; a plurality of power receiving coils arranged to have certain relative angles to one another in a parallel magnetic field generated by a power supply unit; a rectifier circuit connected to each of the power receiving coils; and an adder circuit configured to add DC power obtained from the plurality of power receiving coils through the rectifier circuits, and to output resultant DC power of the addition. - View Dependent Claims (7, 8)
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9. A battery pack employing a contactless power receiving unit comprising:
the power receiving unit comprising; a plurality of power receiving coils arranged to have certain relative angles to one another in a parallel magnetic field generated by a power supply unit; a rectifier circuit connected to each of the power receiving coils; an adder circuit configured to add DC power obtained, through the rectifier circuits, from the plurality of power receiving coils, and to output resultant DC power of the addition; and a secondary battery configured to store an added sum of DC power outputted from the adder circuit.
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10. A contactless power receiving unit comprising:
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a first power receiving coil arranged in a first direction, configured to generate electromotive force from a parallel magnetic field; a second power receiving coil arranged to form a relative angle to the first direction, configured to generate electromotive force from the parallel magnetic field; a first rectifier circuit electrically coupled to the first power receiving coil, configured to convert electromotive force generated by the first power receiving coil into a first DC power; a second rectifier circuit electrically coupled to the second power receiving coil, configured to convert electromotive force generated by the second power receiving coil into a second DC power; and an adder circuit electrically coupled to the first and second rectifier circuits, configured to add the first DC power converted by the first with the second DC power converted by the second rectifier circuits, and configured to output the added DC power. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification